/* ── Reset & base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0d1117;
  --bg-card:   #161b22;
  --bg-input:  #0d1117;
  --border:    #30363d;
  --text:      #e6edf3;
  --text-mute: #8b949e;
  --green:     #3fb950;
  --red:       #f85149;
  --yellow:    #d29922;
  --blue:      #58a6ff;
  --radius:    8px;
  --mono:      'Consolas', 'JetBrains Mono', 'Courier New', monospace;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

/* ── Page visibility ───────────────────────────────────────────────────────── */
.page { display: flex; flex-direction: column; min-height: 100vh; }
.hidden { display: none !important; }

/* ── Login ─────────────────────────────────────────────────────────────────── */
#pg-login {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, #0f2a1a 0%, var(--bg) 70%);
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 36px;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}
.login-logo h1 {
  font-size: 28px;
  font-weight: 700;
  margin-top: 12px;
  letter-spacing: -0.5px;
}
.login-sub {
  color: var(--text-mute);
  font-size: 13px;
  margin-top: 4px;
}

.link-btn {
  background: none;
  border: none;
  padding: 0;
  color: var(--blue);
  font-size: 13px;
  cursor: pointer;
  text-decoration: underline;
}
.link-btn:hover { opacity: 0.85; }

.auth-switch {
  text-align: center;
  margin-top: 18px;
  color: var(--text-mute);
  font-size: 13px;
}

.hdr-user {
  color: var(--text-mute);
  font-size: 13px;
  margin-right: 4px;
}

/* ── Top bar ───────────────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 52px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-left { display: flex; align-items: center; gap: 10px; }
.brand { font-size: 16px; font-weight: 700; letter-spacing: -0.3px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.hdr-pairs { font-size: 12px; color: var(--text-mute); font-family: var(--mono); }

/* ── Status pill ───────────────────────────────────────────────────────────── */
.status-pill {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.2px;
}
.status-running  { background: #0d2a18; color: var(--green); border: 1px solid #1e4a2a; }
.status-stopped  { background: #2a1414; color: var(--red);   border: 1px solid #4a2020; }

/* ── Mode badge ────────────────────────────────────────────────────────────── */
.mode-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}
.mode-paper { background: #1a2840; color: var(--blue); border: 1px solid #243850; }
.mode-live  { background: #2a1414; color: var(--red);  border: 1px solid #4a2020; }

/* ── Container ─────────────────────────────────────────────────────────────── */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px 40px;
  flex: 1;
}

/* ── Stats row ─────────────────────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
@media (max-width: 900px) { .stats-row { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .stats-row { grid-template-columns: repeat(2, 1fr); } }

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat-label { font-size: 11px; color: var(--text-mute); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 4px; }
.stat-val   { font-size: 20px; font-weight: 600; font-family: var(--mono); }

/* ── Content grid ──────────────────────────────────────────────────────────── */
.content-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 900px) { .content-grid { grid-template-columns: 1fr; } }

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.col-right .card:last-child { margin-bottom: 0; }

.pair-override-block {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  margin-bottom: 8px;
}
.pair-override-block summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}
.pair-override-block:last-child { margin-bottom: 0; }

.card-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-title-row .card-title { margin-bottom: 0; }
.badge-note {
  font-size: 11px;
  color: var(--text-mute);
  background: #21262d;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 7px;
}

/* ── Charts page ──────────────────────────────────────────────────────────── */
.chart-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}
.chart-controls select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 6px 10px;
  font-size: 13px;
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 11px;
  color: var(--text-mute);
  margin-bottom: 12px;
}
.chart-legend span {
  display: flex;
  align-items: center;
  gap: 5px;
}
.chart-legend .swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
}
.chart-wrap {
  position: relative;
  width: 100%;
  height: 340px;
  margin-bottom: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
}
.chart-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.chart-wrap-main {
  height: 640px;
}
.chart-wrap-main canvas {
  cursor: grab;
}
.chart-wrap-main canvas:active {
  cursor: grabbing;
}
.chart-wrap-sub {
  height: 120px;
}
.chart-sub-label {
  position: absolute;
  top: 4px;
  left: 8px;
  font-size: 11px;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 1;
  pointer-events: none;
}

/* ── Trading Tools page ───────────────────────────────────────────────────── */
.opt-progress {
  max-height: 160px;
  overflow-y: auto;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-mute);
}
#opt-results details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin-bottom: 6px;
}
#opt-results summary {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 13px;
}
#opt-results details table {
  margin-top: 8px;
}
#opt-results .trade-subtitle:first-of-type {
  margin-top: 0;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, filter 0.15s;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn:not(:disabled):hover { filter: brightness(1.12); }
.btn:not(:disabled):active { filter: brightness(0.9); }

.btn-primary { background: var(--green);  color: #000; border-color: var(--green); }
.btn-success { background: #196c2e;       color: var(--green); border-color: #2a8a3e; }
.btn-danger  { background: #5a1d1d;       color: var(--red);   border-color: #7a2d2d; }
.btn-warning { background: #3a2e0a;       color: var(--yellow);border-color: #5a4a1a; }
.btn-ghost   { background: transparent;   color: var(--text-mute); border-color: var(--border); }
.btn-ghost:hover { color: var(--text) !important; }
.btn-full    { width: 100%; margin-top: 4px; }
.btn-sm      { padding: 4px 10px; font-size: 12px; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ── Form fields ───────────────────────────────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 14px;
}
.field:last-of-type { margin-bottom: 0; }

label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-mute);
}
.hint {
  font-weight: 400;
  color: #606676;
}
.pov-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}
.pov-index {
  color: var(--green);
  font-weight: 600;
}

input[type="text"],
input[type="number"],
input[type="password"],
select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  padding: 7px 10px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
  font-family: inherit;
}
input:focus, select:focus { border-color: var(--blue); }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238b949e' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 28px; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.field-row .field { margin-bottom: 0; }

.toggle-row { flex-direction: row; align-items: center; margin: 4px 0 14px; }
.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}
.toggle-label.small { font-size: 12px; color: var(--text-mute); }
.toggle-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--green);
  cursor: pointer;
}

.param-group { margin-bottom: 14px; }

/* ── Messages ──────────────────────────────────────────────────────────────── */
.msg {
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  margin-bottom: 12px;
  border: 1px solid transparent;
}
.msg-ok    { background: #0d2a18; color: var(--green);  border-color: #1e4a2a; }
.msg-error { background: #2a1414; color: var(--red);    border-color: #4a2020; }
.msg-info  { background: #0d1f3a; color: var(--blue);   border-color: #1a3a5e; }
.msg-warn  { background: #2a200a; color: var(--yellow); border-color: #4a3a1a; }

/* ── Tables ────────────────────────────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 12px;
}
.data-table th {
  text-align: left;
  color: var(--text-mute);
  font-weight: 500;
  padding: 0 8px 8px;
  font-family: inherit;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 8px;
  border-bottom: 1px solid #1c2128;
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #1c2128; }

.buy-side  { color: var(--green); font-weight: 600; }
.sell-side { color: var(--red);   font-weight: 600; }
.pnl-pos   { color: var(--green); }
.pnl-neg   { color: var(--red);   }
.mono      { font-family: var(--mono); }

.empty { color: var(--text-mute); font-size: 13px; text-align: center; padding: 16px 0; }

/* ── Pagination ────────────────────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 10px;
}
.pagination-info {
  font-size: 12px;
  color: var(--text-mute);
  font-family: var(--mono);
}

/* ── Log viewer ────────────────────────────────────────────────────────────── */
.log-viewer {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  height: 280px;
  overflow-y: auto;
  background: #0a0e13;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
}
.log-entry { display: flex; gap: 10px; }
.log-time  { color: #404858; flex-shrink: 0; }
.log-level-INFO    { color: #8b949e; }
.log-level-WARNING { color: var(--yellow); }
.log-level-ERROR   { color: var(--red); }
.log-level-DEBUG   { color: #404858; }
.log-msg   { color: var(--text-mute); word-break: break-all; }
.log-msg.INFO    { color: #c9d1d9; }
.log-msg.WARNING { color: var(--yellow); }
.log-msg.ERROR   { color: var(--red); }

/* ── Manual trade form ─────────────────────────────────────────────────────── */
.trade-divider  { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
.trade-subtitle {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

/* ── Gear / icon button ────────────────────────────────────────────────────── */
.btn-icon { padding: 5px 8px; line-height: 0; }

/* ── Settings page ─────────────────────────────────────────────────────────── */
.settings-layout {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.setting-desc {
  font-size: 11px;
  color: var(--text-mute);
  line-height: 1.5;
  margin: 6px 0 14px;
}

.card-danger-zone { border-color: #4a2020; }

.danger-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.danger-item-title { font-size: 13px; font-weight: 600; margin-bottom: 4px; }

.sys-divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* ── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #30363d; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #484f58; }